using System;

/*
 * Copyright 2001, 2002 Paulo Soares
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 */

namespace iTextSharp.text.pdf {

    /**
     * A <CODE>PdfSpotColor</CODE> defines a ColorSpace
     *
     * @see     PdfDictionary
     */

    public class PdfSpotColor{
    
        /*  The tint value */
        protected float tint;
    
        /*  The color name */
        public PdfName name;
    
        /* The alternative color space */
        public Color altcs;
        // constructors
    
        /**
         * Constructs a new <CODE>PdfSpotColor</CODE>.
         *
         * @param       name        a string value
         * @param       tint        a tint value between 0 and 1
         * @param       altcs       a altnative colorspace value
         */
    
        public PdfSpotColor(string name, float tint, Color altcs) {
            this.name = new PdfName(name);
            this.tint = tint;
            this.altcs = altcs;
        }
    
        public float Tint {
            get {
                return tint;
            }
        }
    
        public Color AlternativeCS {
            get {
                return altcs;
            }
        }
    
        protected internal PdfObject GetSpotObject(PdfWriter writer) {
            PdfArray array = new PdfArray(PdfName.SEPARATION);
            array.Add(name);
            PdfFunction func = null;
            if (altcs is ExtendedColor) {
                int type = ((ExtendedColor)altcs).Type;
                switch (type) {
                    case ExtendedColor.TYPE_GRAY:
                        array.Add(PdfName.DEVICEGRAY);
                        func = PdfFunction.Type2(writer, new float[]{0, 1}, null, new float[]{0}, new float[]{((GrayColor)altcs).Gray}, 1);
                        break;
                    case ExtendedColor.TYPE_CMYK:
                        array.Add(PdfName.DEVICECMYK);
                        CMYKColor cmyk = (CMYKColor)altcs;
                        func = PdfFunction.Type2(writer, new float[]{0, 1}, null, new float[]{0, 0, 0, 0},
                            new float[]{cmyk.Cyan, cmyk.Magenta, cmyk.Yellow, cmyk.Black}, 1);
                        break;
                    default:
                        throw new Exception("Only RGB, Gray and CMYK are supported as alternative color spaces.");
                }
            }
            else {
                array.Add(PdfName.DEVICERGB);
                func = PdfFunction.Type2(writer, new float[]{0, 1}, null, new float[]{1, 1, 1},
                    new float[]{(float)altcs.R / 255, (float)altcs.G / 255, (float)altcs.B / 255}, 1);
            }
            array.Add(func.Reference);
            return array;
        }
    }
}